Speed + Distance Features. EXACT SPEEDS Measures your real-time speed, average speed and maximum speed. EXACT PACE Calculates your pace, average pace and best pace. EXACT DISTANCE Tracks your workout distance and gives target distance alerts. CONTINUOUS ODOMETER Keeps track of your total distance for a workout or group of workouts. HANDS FREE OPERATION Start, stop and take splits automatically based on distance, speed or time. Watch Features. INDIGLO night-light with NIGHT-MODE feature. SUMMARY MODE: review speed, distance and heart rate performance data at end of workout. 100-hour, 3-mode countdown timer. 100-lap memory with recall; lap and split option. 5 alarms with 5-minute backup. Watch: 2 year battery life. Watch: Water-resistance 50m. Heart Rate Monitor Features. TARGET ZONES Preset your desired heart rate exercise zone. Alarm notification when you are not in zone. AVERAGE HEART RATE Displays your average heart rate over a period of time. TIME IN ZONE Amount of time spent within your selected heart rate target zone. MAXIMUM HEART RATE ZONE CALCULATION Automatically sets your five training zones, one manual zone setting.